Given below are two statements.Statement I : Increase in Ca+2 level in the sarcoplasm leads to the binding of calcium with a subunit of troponin on actin filaments.Statement II : Action potential spreads across the muscle fibre and causes the release of calcium ions into the sarcoplasm.In light of the above statements, choose the correct answer from the option given below.

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Given below are two statements.

Statement I : Increase in Ca⁺² level in the sarcoplasm leads to the binding of calcium with a subunit of troponin on actin filaments.
Statement II : Action potential spreads across the muscle fibre and causes the release of calcium ions into the sarcoplasm.

In light of the above statements, choose the correct answer from the option given below.

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Both statement I and statement II are incorrect.

Statement I is incorrect but statement II is correct.

Statement I is correct but statement II is incorrect.

Both statement I and statement II are correct.

answer is A.

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Detailed Solution

Action potential spreads through the muscle and causes the release of calcium ions into the sarcoplasm. An increase in Ca⁺⁺level leads to the binding of calcium with a subunit of troponin on actin filaments.

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